initial commit
add multiplication
added division, argument, size
added transformation from polar and power operation
use new internally
add examples to the readme
added a macro and guards
use a conversion protocol
update elixir and change doctest format
update to 0.12 and new syntax for tests
ignore _build
do not need copy/paste
Notes on complex ^ complex
Separated testdocs from regular tests
sample code from ruby lib
Merge branch 'master' of https://github.com/JordiPolo/complex

Conflicts:
	.gitignore
	README.md
	lib/complex.ex
	mix.exs
	test/complex_test.exs